329 FNUS76 KPDT 291823 FWSPDT Spot Forecast for HIGHWAY 12 MP310...WALLA WALLA COUNTY FIRE DISTRICT #4 National Weather Service Pendleton OR 1123 AM PDT Mon Jun 29 2026 Forecast is based on forecast start time of 1100 PDT on June 29. ***Thunderstorms imply gusty and erratic winds *** ***Winds are 20 foot 10-minute averages *** ***CWR: Chance of wetting rain 0.10 or greater *** ***Ventilation Index is derived from transport wind multiplied by the mixing height in 100's of ft. Categories are a generalized indicator only: low (< 200), moderate (200-500), high (500-700), and very high (> 700). *** If you have questions or concerns with this forecast, please contact our office at (541) 276-8134. .DISCUSSION...Excellent overnight humidity recoveries this morning will lead to a slightly warmer (+3) and more moist (+6%) afternoon. Winds will briefly decrease mid-afternoon before increasing later this evening into the early overnight period due to an approaching weak system. This will also increase cloud cover tonight, keeping Tuesday morning temperatures warmer (+5) with a slight drop in overnight humidity recoveries (-5%). Breezy morning winds Tuesday will see a more substantial drop mid-afternoon. .REST OF TODAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....79-82. Min humidity........36-41 percent. Wind (20 ft)........Breezy. Southwest winds 14 to 25 mph with gusts to around 30 mph. Mixing height.......5000 ft AGL. Transport winds.....Southwest 22 to 26 mph. Ventilation Index...Very high (850). TIME (PDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............66 68 72 75 76 78 79 78 77 75 70 69 RH..............59 53 50 46 43 41 40 40 39 44 50 54 20 FT wind dir..SW SW SW SW SW SW SW SW SW SW SW SW 20 FT wind spd..25 24 22 21 21 21 21 22 25 27 29 31 20 FT wind gust.30 29 26 26 25 25 24 26 29 30 32 34 .TONIGHT... Sky/weather.........Mostly clear (20-30 percent) then becoming mostly cloudy (60-70 percent) around 2200, then becoming partly cloudy (35-45 percent) after 0200. CWR.................0 percent. Chance of lightning.3 percent. Min temperature.....59-62. Max humidity........65-70 percent. Wind (20 ft)........Windy. Southwest winds 15 to 27 mph with gusts to around 34 mph, peaking between 2000 and 0100. Mixing height.......700 ft AGL. Transport winds.....Southwest 25 to 33 mph. Ventilation Index...High (570) decreasing to low (200) overnight. .TUESDAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Chance of lightning.3 percent. Max temperature.....79-82. Min humidity........30-35 percent. Wind (20 ft)........Windy. Southwest winds 15 to 25 mph with gusts to around 32 mph decreasing to 8 to 18 mph with gusts to around 25 mph in the afternoon. Mixing height.......5600 ft AGL. Transport winds.....Southwest 24 to 33 mph shifting to the west 18 to 22 mph late in the afternoon. Ventilation Index...Moderate (470) increasing to very high (890) in the afternoon. $$ Forecaster...Callihan Requested by...Brandon McKinney Type of request...WILDFIRE .TAG 2616454.0/PDT .DELDT 06/29/26 .FormatterVersion 2.0.0 .EMAIL imt@wwfire4.com